Relationship Management connecting Entities

@using ToSic.Eav.DataSources
@{
	var feature = Content;
	int featureNumber = 0;
	int.TryParse(Request.QueryString["Feature"], out featureNumber); // try from QS
	if (featureNumber > 0)
	{
		var featSource = CreateSource<EntityIdFilter>();
		featSource.EntityIds = featureNumber.ToString();
		var found = featSource.List.FirstOrDefault();
		if (found != null)
		{
			feature = AsDynamic(found);
		}
	}
}
<div class="co-container-outer mb-5">
<div class="co-container-inner sc-element">
    <div class="row">
        <div class="col-12 col-md-8 offset-md-2">
            
    @if(Permissions.UserMayEditContent)
    {
        if (feature.Title != "Demo Feature")
        {
            @*currently not showing the demo-entity, so show the normal toolbar*@
            @feature.Toolbar
        }
        else
        {

	<ul class='sc-menu' data-toolbar='[{"action":"edit", "useModuleList":true, "sortOrder": 0, "prefill": { "DocumentedOnPage": "page:@Dnn.Tab.TabID", "Title": "@Dnn.Tab.Title" } }]'></ul>

        }
    }
    <div>
        <div class="@if (!String.IsNullOrEmpty(feature.Image)) {<text>ym-g50</text>} ym-gl">
            <div class="ym-gbox-half">
                <h1>@feature.Title</h1>
                
                @if(!String.IsNullOrEmpty(feature.ReplacementDocs)) {
                   <h2>Important: new docs available</h2>
                   <div>This information has been improved so it's best to <a href="@feature.ReplacementDocs" target="_blank">continue in the new wiki</a>.</div>
                   <div>This page is currently still left here so old links will continue to work, but the content is not updated any more. </div>
                   <br/>
                   <br/>
                }

	            <div><em>Introduced in Version @feature.AddedInVersion</em></div>
				@if (!String.IsNullOrEmpty(feature.DemoPage) || !String.IsNullOrEmpty(feature.DemoAppKey))
				{
					<div><strong>Demos of this feature</strong>
				<ul>
						@if (!String.IsNullOrEmpty(feature.DemoPage))
						{
							<li><a href="@feature.DemoPage">live demo</a></li>
						} 
						@if (!String.IsNullOrEmpty(feature.DemoAppKey))
						{
							<li><a href="/en/apps/app/@feature.DemoAppKey">try the @feature.DemoAppKey App</a></li>

						}
				</ul>
					</div>
				}
                <div>@Html.Raw(feature.DescriptionLong)</div>
            </div>
        </div>

        @if (!String.IsNullOrEmpty(feature.Image))
        {
            if (Presentation != null && Presentation.ImageAction == "block")
            {
                @:<a href="@feature.Image" class="fancybox">
			}

            <div class="ym-g50 ym-gr co-image-space" style="text-align:right;">
                <img src="@feature.Image?w=454" />
            </div>

            if (Presentation != null && Presentation.ImageAction == "block")
            {
                @:</a>
			}
        }
        </div>
    </div>
    </div>
    </div>
</div>

<div class="sc-content-block-list" @Edit.ContextAttributes(Content, field: "DesignedContent")>
    @foreach(var contentBlock in Content.DesignedContent){
        @contentBlock.Render()
    }
</div>


@{
    // Here's some special stuff necessary to find all related features
    // 1. leave the simple API, go to the power API of entities, must be typed to work
    ToSic.Eav.Interfaces.IEntity ent = AsEntity(feature);

    // 2. Get all incomming and outgoing relationships (all parents & children)
    var entitiesReferringToThis = ent.Relationships.AllParents.Union(ent.Relationships.AllChildren);

    // 3. Filter. We only want relationships to the same type of data
    // 4. Make sure we don't have duplicates with Distinct()
    var RelFeatures = entitiesReferringToThis.Where(c => c.Type.Name == "2SexyContent Feature").Distinct();
}
@if (RelFeatures.Count() > 0)
{
<div class="co-container-outer mb-5">
    <div class="co-container-inner sc-element">
         <div class="row">
        <div class="col-12 col-md-8 offset-md-2">
            
      
        <h6>Related Features</h6>
        <ol>
            @foreach (var feat in RelFeatures)
            {
                var dynFeat = AsDynamic(feat);
                <li><a href="@(!String.IsNullOrEmpty(dynFeat.DocumentedOnPage) ? dynFeat.DocumentedOnPage : "/en-us/docsmanuals/feature.aspx?feature=" + dynFeat.EntityId)">@dynFeat.Title</a></li>
            }
        </ol>
          </div>
    </div>
    </div>
</div>
}
<div class="co-container-outer mb-5">
    <div class="co-container-inner sc-element">
          <div class="row">
        <div class="col-12 col-md-8 offset-md-2">
            
        <h6>Tags for this feature</h6>
            @foreach (var tag in feature.Tags)
            {
              <a class="badge badge-light" href="/en/docs?tag=@tag.Tag">@tag.Tag</a>

            }
                </div>
</div>
    </div>
</div>